Q. No.Which one of the following cellular parts is correctly described ?
1. Thylakoids - flattened membranous sacs forming the grana of chloroplasts
2. Centrioles - sites for active RNA synthesis
3. Ribosomes - those on chloroplasts are larger (80s) while those in the cytoplasm are smaller (70s)
4. Lysosomes - optimally active at a pH of about 8.5
1. Thylakoids - flattened membranous sacs forming the grana of chloroplasts
2. Centrioles - sites for active RNA synthesis
3. Ribosomes - those on chloroplasts are larger (80s) while those in the cytoplasm are smaller (70s)
4. Lysosomes - optimally active at a pH of about 8.5
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Which one of the following organelle in the figure correctly matches with its function?
| 1. | Golgi apparatus, protein synthesis |
| 2. | Golgi apparatus, formation of glycolipids |
| 3. | Rough endoplasmic reticulum, protein synthesis |
| 4. | Rough endoplasmic reticulum, formation of glycoproteins |
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The Golgi complex plays a major role
1. in digesting proteins and carbohydrates
2. as energy transferring organelles
3. in post translational modification of proteins and glycosidation of lipids
4. in trapping the light and transforming it into chemical energy
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Which structures perform the function of mitochondria in bacteria?
| 1. | Nucleoid | 2. | Ribosomes |
| 3. | Cell wall | 4. | Mesosomes |
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The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as :
1. Microtubules
2. Microfilaments
3. Intermediate filaments
4. Lamins
The osmotic expansion of a cell kept in water is chiefly regulated by :
1. Mitochondria
2. Vacuoles
3. Plastids
4. Ribosomes
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Match the following and select the correct answer :
| (a) | Centriole | (i) | Infoldings in mitochondria |
| (b) | Chlorophyll | (ii) | Thylakoids |
| (c) | Cristae | (iii) | Nucleic acids |
| (d) | Ribozymes | (iv) | Basal body cilia or flagella |
| A | B | C | D | |
| 1. | (iv) | (ii) | (i) | (iii) |
| 2. | (i) | (ii) | (iv) | (iii) |
| 3. | (i) | (iii) | (ii) | (iv) |
| 4. | (iv) | (iii) | (i) | (ii) |
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Which of the following are not membrane-bound?
1. Ribosomes
2. Lysosomes
3. Mesosomes
4. Vacuoles
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Which of the following structure is not found in a prokaryotic cell?
1.Ribosome
2.Mesosome
3.Plasma membrane
4.Nuclear envelope
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